Crops ›› 2017, Vol. 33 ›› Issue (5): 142-148.doi: 10.16035/j.issn.1001-7283.2017.05.024

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Effects of 2,4-D 2-Ethylhexyl Ester·Florasulam on Yield and Quality of Winter Wheat

Liu Yan,Hu Zhanli,Shi Yan   

  1. Dryland-Technology Key Laboratory of Shandong Province,Qingdao Agricultural University,Qingdao 266109,Shandong,China
  • Received:2017-06-02 Revised:2017-08-26 Online:2017-10-15 Published:2018-08-26
  • Contact: Yan Shi

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Abstract:

In order to optimize herbicide dosage and to increase grain yield of winter wheat, a field experiment and a pot experiment were conducted using Jimai 22 as material to investigate the effects of 2,4-D 2-ethylhexyl ester?florasulam on the yield and quality of grain. Four herbicide dosage treatments (225, 450, 675, 900mL/hm 2) with a water control were set up to study the effects of different dosages of 2,4-D 2-ethylhexyl ester?florasulam on winter wheat broadleaf weed, filling rate and yield in field experiment. Four herbicide dosage treatments (0, 1.17, 2.33, 3.50, 4.67μL/pot) with a water control to study its effect on grain quality in a pot experiment. The results showed that different dosages of 2,4-D 2-ethylhexyl ester?florasulam had significant effects on broadleaf weed control compared to the control, and the effect increased with the increase of herbicide dosage, showing some dose-effect relationship. Compared with the control, wheat grain filling rate, yield and yield components increased first and then decreased with the increase of the herbicide dosage. Although 450mL/hm 2 of 2,4-D 2-ethylhexyl ester?florasulam is recommended by the manufacture company, 225mL/hm 2 should be used if the weed are less, however 675mL/hm 2 should be used if weeds are more.

Key words: 2,4-D 2-ethylhexyl ester·florasulam;, Wheat, Yield, Quality

Table 1

Effects of 2,4-D 2-ethylhexyl ester·florasulam on broadleaf weed control efficacy in wheat %"

处理
Treatment		 药后15d株防效
Plant control efficacy
at 15 days after application		 药后60d 60 days after application
株防效
Plant control
efficacy		 鲜重防效
Fresh weight control efficacy
CK — — —
T1 76.8d 89.7c 90.5d
T2 82.3c 92.0bc 92.7c
T3 86.1b 94.8ab 95.9b
T4 90.6a 97.9a 99.5a

Fig.1

Effects of different 2,4-D 2-ethylhexyl ester·florasulam on grain filling rate of wheat"

Table 2

Effects of different 2,4-D 2-ethylhexyl ester·florasulam on grain yield and its components of wheat"

处理
Treatment		 穗数(104/hm2)
Number of ears		 穗粒数
Grain per ear		 千粒重(g)
1000-grain weight		 产量(kg/hm2)
Yield
CK 39.38ab 30.96c 33.91bc 412.87c
T1 40.56ab 31.79b 34.27abc 436.68b
T2 41.25ab 32.45a 36.39a 448.19ab
T3 42.51a 32.48a 36.03ab 453.52a
T4 38.42b 30.96c 33.62c 401.49d

Table 3

Effects of 2,4-D 2-ethylhexyl ester·florasulam on wheat grain qualities"

处理
Treatment		 出粉率(%)
Flour yield		 粗蛋白含量(g/100g)
Crude protein content		 吸水率(%)
Water
absorption rate		 面团形成
时间(min)
Forming time		 面团稳定
时间(min)
Stable time		 软化度(FU)
Softening
degree		 沉降值(mL)
Sedimentation		 湿面筋值(%)
Wet gluten
content
CK 59.27b 10.63c 59.62cd 3.21c 4.45a 116.59c 31.56bc 28.09d
T1 60.91a 10.98bc 60.76bc 3.45b 3.89b 122.34b 32.63ab 29.57c
T2 61.35a 11.47ab 61.85ab 3.62b 3.51c 127.82a 33.71a 32.27a
T3 62.08a 11.93a 62.59a 4.11a 3.65c 130.68a 34.05a 31.61b
T4 58.95b 10.56c 58.25d 3.09c 4.23a 108.67d 30.79c 27.64d

Table 4

Effects of 2,4-D 2-ethylhexyl ester·florasulam on wheat qualities (pot)"

处理
Treatment		 出粉率(%)
Flour yield		 粗蛋白含量(g/100g)
Crude protein content		 吸水率(%)
Water
absorption rate		 面团形成
时间(min)
Forming time		 面团稳定
时间(min)
Stable time		 软化度(FU)
Softening
degree		 沉降值(mL)
Sedimentation		 湿面筋值(%)
Wet gluten
content
CK(P) 58.24a 10.21b 58.43c 3.01c 4.27a 114.37c 30.25c 27.21b
P1 59.83a 10.58ab 59.55b 3.23bc 3.58b 120.19b 31.34b 28.32b
P2 60.27a 11.03ab 60.67a 3.45ab 3.24c 125.53a 33.38a 31.28a
P3 61.15a 11.35a 61.34a 3.92a 3.37d 128.41a 33.23ab 30.59a
P4 57.93a 10.03c 57.21d 2.96c 4.02a 106.32d 30.02c 26.42b
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